CN206309322U - A kind of plugging device in stolen hole - Google Patents
A kind of plugging device in stolen hole Download PDFInfo
- Publication number
- CN206309322U CN206309322U CN201621301647.9U CN201621301647U CN206309322U CN 206309322 U CN206309322 U CN 206309322U CN 201621301647 U CN201621301647 U CN 201621301647U CN 206309322 U CN206309322 U CN 206309322U
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- Prior art keywords
- seal pipe
- plugging device
- transmission rod
- seal
- sealing plug
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a kind of plugging device in stolen hole, belong to stolen hole closure field, the device includes conical sealing plug, and the two ends of conical sealing plug are respectively bigger diameter end and miner diameter end；Transmission rod, lower end is connected with the bigger diameter end of conical sealing plug；Plugging device also includes seal pipe, gap is sleeved on transmission rod, the internal thread being threadedly coupled with the valve on petroleum pipeline is provided with the lower end inner wall of seal pipe, transmission rod can move up and down in seal pipe, conical sealing plug is inserted in the stolen hole on petroleum pipeline；Blow-down pipe, is arranged on the bottom of seal pipe, and with the inner space of seal pipe；Seal, is fixed in seal pipe upper lumen, for sealing the annular space between transmission rod and seal pipe.Using the simple to operate of plugging device closure stolen hole, conveniently judge whether stolen hole is blocked completely, and be not in the phenomenon that crude oil sprays, can promote the use of.
Description
Technical field
The utility model is related to stolen hole to block field, more particularly to a kind of plugging device in stolen hole.
Background technology
In oil field development, petroleum pipeline is the essential means of delivery of oilfield enterprise.But under the driving of interests, one
A little lawless persons steal crude oil by getting through stolen hole on petroleum pipeline, and this has a strong impact on the normal operation of petroleum pipeline,
Economic loss is brought to oilfield enterprise, but also can be polluted because of crude oil leakage.Current lawless person is mainly by by metal
The tile of material and pipe nipple welding (structure of tile is adapted with petroleum pipeline outer surface), and the connecting valve on pipe nipple, so
Tile is bonded on petroleum pipeline afterwards, opens valve, valve and pipe nipple are penetrated using boring bar tool, then to tile and oil transportation
Pipeline drills, and finally takes out boring bar tool and closes valve, completes drilling through for stolen hole.By other feed-lines and valve spiral shell
Line is connected, and opens valve, just can steal crude oil.After stolen is finished, valve is closed, tile, pipe nipple and valve are retained in defeated
Oil pipeline is stolen with facilitating next time.The phenomenon of crude oil can be stolen to reduce by blocking stolen hole at present, therefore a kind of robber is provided
The plugging device of oilhole is very necessary.
Prior art provide a kind of capping tools in stolen hole, including closure rod, packing box, packing, gland for packing box,
Bolt and nut, one end for blocking rod are conical sealing plug, and screw thread is provided with conical sealing plug, block the taper envelope of rod
Plug one end sequentially passes through packing box, gland for packing box, there is the packing being sleeved on closure rod, one end weldering of bolt in packing box
Packing box top is connected on, the other end is connected through the bolt hole on gland for packing box with nut.When stolen hole is blocked, first will
Be connected with valve at screw thread, then by controlling precession distance of the nut on bolt, reduce gland for packing box and packing box it
Between distance so that gland for packing box compresses packing, and then block and sealed between rod and packing box, then tapped with hammer and blocked
Rod, makes the conical sealing plug of closure rod block stolen hole.Further, precession distance of the adjustable nut on bolt, makes disk
Root box gland leaves packing box, and by observing the gap between packing and closure rod, whether oil leak judges whether stolen hole is sealed
Block up, can be repeated several times above-mentioned steps, untill oil-proof between packing and closure rod.Finally by pipe nipple and closure rod saw
It is disconnected, stolen hole and conical sealing plug are welded with blind plate, complete the closure in stolen hole.
Designer has found that prior art at least has problems with：
The capping tools in the stolen hole that prior art is provided needs repeatedly tune when judging whether stolen hole is blocked completely
Distance of the whole nut on bolt, so that gland for packing box compresses packing or leaves packing, it is cumbersome, it is unfavorable for that popularization makes
With.
Utility model content
The utility model embodiment technical problem to be solved is, there is provided a kind of easy to operate, can promote the use of
Stolen hole plugging device and method for blocking.Concrete technical scheme is as follows：
The utility model embodiment provides a kind of plugging device in stolen hole, and the plugging device is blocked including taper
Head, the two ends of the conical sealing plug are respectively bigger diameter end and miner diameter end；Transmission rod, lower end with described in the conical sealing plug
Bigger diameter end is connected；The plugging device also includes seal pipe, and gap is sleeved on the transmission rod, in the lower end of the seal pipe
The internal thread being threadedly coupled with the valve on petroleum pipeline is provided with wall, the transmission rod can up and down be transported in the seal pipe
It is dynamic, the conical sealing plug is inserted in the stolen hole on the petroleum pipeline；Blow-down pipe, is arranged under the seal pipe
Portion, and with the inner space of the seal pipe；Seal, is fixed in the seal pipe upper lumen, for sealing the biography
Annular space between power bar and the seal pipe.
Specifically, preferably, circumferentially arranged on the conical sealing plug outer surface have multi-ring annular raised.
Specifically, preferably, the bigger diameter end of the conical sealing plug detachably connects with the lower end of the transmission rod
Connect.
Specifically, preferably, described device also includes the power transmission pole cap being connected with the transmission rod upper end, the power transmission
Pole cap is in hexagonal prism structure.
Specifically, preferably, described device also includes two handlebars, two handlebars respectively with the power transmission
The relative side wall of bar is vertically connected.
Specifically, preferably, described device also includes hydraulic control force application apparatus, the hydraulic control force application apparatus include hydraulic pressure thousand
Jin top, the square set being made up of upper level board, lower horizontal board, left vertical support, right vertical support, and positioned at described left perpendicular
Between straight strut and the right vertical support and the by-level plate that can slide up and down；Circle is provided with the middle part of the lower horizontal board
Hole, the lower horizontal board is set with by the circular hole and is fixed on the top of the sealed tube wall；The by-level plate is located at
The upper end of the power transmission pole cap；The hydraulic jack is placed on by-level plate.
Specifically, preferably, the seal is circular sealing-plug；The inwall on the seal pipe top is provided with ring
Connected in star, the big footpath outer rim of the circular sealing-plug is fixed in the annular groove.
Specifically, preferably, the plugging device also includes the seal pipe being detachably connected with the seal pipe upper end
Gland, the transmission rod dynamic sealing ground passes through the seal pipe gland.
Specifically, preferably, the seal pipe gland is sleeved on the seal pipe upper end threadably.
The beneficial effect brought of technical scheme that the utility model embodiment is provided is：
The anti-theft device in the stolen hole that the utility model embodiment is provided, blow-down pipe is set by the bottom of seal pipe,
Whether there can be crude oil to flow out by observing blow-down pipe and judge whether stolen hole is blocked completely by conical sealing plug.By in sealing
It is provided for sealing the seal of the annular space between transmission rod and seal pipe in pipe upper lumen, conical sealing plug can be prevented
When stolen hole is blocked, crude oil is sprayed by seal pipe.In by setting on the seal pipe lower end inner wall and to be threadedly coupled with valve
Screw thread, is easy to seal pipe to be threadedly coupled with valve, can prevent under the souring of crude oil, and seal pipe is separated with valve.Adopt
There is provided stolen hole plugging device with the utility model embodiment and block the simple to operate of stolen hole, it is convenient judge stolen hole whether by
Block completely, and be not in crude oil spray phenomenon, can promote the use of.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the utility model embodiment, below will be to needed for embodiment description
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 be the utility model embodiment provide when being provided with transmission rod, the structural representation of the plugging device in stolen hole
Figure；
Fig. 2 be the utility model embodiment provide when being provided with hydraulic control force application apparatus, the knot of the plugging device in stolen hole
Structure schematic diagram；
Fig. 3 is the seal that the utility model embodiment is provided when being circular sealing-plug, the top view of seal；
Fig. 4 is the annexation schematic diagram of the seal pipe gland that the utility model embodiment is provided and seal pipe.
Reference is represented respectively：
1 conical sealing plug,
2 transmission rods,
3 seal pipes,
4 blow-down pipes,
5 seals,
6 power transmission pole caps,
7 handlebars,
8 hydraulic control force application apparatus,
801 jack,
Level board on 802,
803 lower horizontal boards,
804 left vertical supports,
805 right vertical supports,
806 by-level plates,
9 seal pipe glands,
10 petroleum pipelines,
11 valves,
12 tiles,
13 pipe nipples.
Specific embodiment
Unless otherwise defined, all technical terms used by the utility model embodiment are respectively provided with and those skilled in the art
The identical implication being generally understood that.To make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with attached
Figure is described in further detail to the utility model implementation method.
The utility model embodiment provides a kind of plugging device in stolen hole, as shown in accompanying drawing 1 and accompanying drawing 2, the closure
Device includes conical sealing plug 1, transmission rod 2, seal pipe 3, blow-down pipe 4, seal 5, wherein, the two ends point of conical sealing plug 1
Wei not bigger diameter end and miner diameter end；The lower end of transmission rod 2 is connected with the bigger diameter end of conical sealing plug 1；The plugging device also includes close
The gap of tube sealing 3 is sleeved on transmission rod 2, is provided with the lower end inner wall of seal pipe 3 and the screw thread of valve 11 on petroleum pipeline 10
The internal thread of connection, transmission rod 2 can be moved up and down in seal pipe 3, and conical sealing plug 1 is inserted into the robber on petroleum pipeline 10
In oilhole；Blow-down pipe 4 is arranged on the bottom of seal pipe 3, and with the inner space of seal pipe 3；Seal 5 is fixed on seal pipe 3
In upper lumen, for sealing the annular space between transmission rod 2 and seal pipe 3.
It should be noted that the targeted pipeline to be blocked of the utility model embodiment refers to having stolen molecule to lose thereon
The petroleum pipeline 10 of the tile 12, pipe nipple 13 and valve 11 that stay, wherein, tile 12 is pasted onto on petroleum pipeline 10, and both
The stolen hole for communicating is provided with, the lower end of pipe nipple 13 is fixed on tile 12, valve 11 is arranged on the upper end of pipe nipple 13, and they are equal
Connected with stolen hole.
The method in the plugging device closure stolen hole in the stolen hole provided with regard to the utility model embodiment is given below is retouched
State：
Seal pipe 3 is sleeved on transmission rod 2 first, and makes conical sealing plug 1 exposed to the outside of the lower end of seal pipe 3,
Then the lower end of seal pipe 3 is threadedly coupled with valve 11, so that the lower end of seal pipe 3 is seamlessly connected with valve 11, this is avoided
Crude oil is sprayed by the lower end of seal pipe 3 with the junction of valve 11.Then valve 11 is opened, gives transmission rod 2 downward effect
Power, now conical sealing plug 1 is sequentially into valve 11 and the pipe nipple 13 that is connected with valve 11, further reeve stolen hole,
During force, crude oil flows out to pipe nipple 13, valve 11, sealing by the gap between stolen hole, stolen hole and conical sealing plug 1
The lower end of pipe 3, until the blow-down pipe 4 of the bottom of seal pipe 3.With the carrying out for giving the downward active force of transmission rod 2, taper closure
Gap between first 1 and stolen hole reduces, until conical sealing plug 1 blocks stolen hole completely, crude oil no longer flows out, blow-down pipe 4
Without crude oil discharge, now transmission rod 2 is exerted a force.Tile 12 is pried away from petroleum pipeline 10 (due to theft personnel finally by crowbar
Typically tile 12 is bonded with petroleum pipeline 10 by binding agent, therefore tile 12 can be pried away from petroleum pipeline 10), treat tile 12
After there is predeterminable range between petroleum pipeline 10, can will be welded between conical sealing plug 1 and stolen hole using electric drill, then will
Transmission rod 2 is separated with conical sealing plug 1, completes the closure in stolen hole.
Wherein, before being exerted a force to transmission rod 2, valve 11 has already turned on, due to the pressure difference between petroleum pipeline 10 and the external world
Greatly, whether the crude oil in petroleum pipeline 10 will quickly flow out, and be flowed out from blow-down pipe 4, therefore can flow out original according to blow-down pipe 4
Oil judges whether conical sealing plug 1 blocks stolen hole completely.
Understood based on above-mentioned, the plugging device in the stolen hole that the utility model embodiment is provided, by under seal pipe 3
Whether portion sets blow-down pipe 4, can have crude oil to flow out by observing blow-down pipe 4 and judge whether stolen hole is complete by conical sealing plug 1
Full closure.By the close of the annular space that is provided in the upper lumen of seal pipe 3 sealing between transmission rod 2 and seal pipe 3
Sealing 5, can prevent conical sealing plug 1 when stolen hole is blocked, and crude oil is sprayed by seal pipe 3.By in the lower end inner wall of seal pipe 3
It is upper that the internal thread being threadedly coupled with valve 11 is set, it is easy to seal pipe 3 to be threadedly coupled with valve 11, washing away in crude oil can be prevented
Under effect, seal pipe 3 is separated with valve 11.Stolen hole plugging device closure stolen hole is provided using the utility model embodiment
It is simple to operate, it is convenient to judge whether stolen hole is blocked completely, and be not in crude oil ejection phenomenon, can promote makes
With.
Specifically, it is circumferentially arranged on the outer surface of conical sealing plug 1 to have multi-ring annular in the utility model embodiment
Projection, being arranged such can ensure to stop when exert a force transmission rod 2, the annular protrusion of conical sealing plug 1 and the partial hole in stolen hole
Or all well offsets, it is to avoid the phenomenon that conical sealing plug 1 leaves stolen hole (i.e. conical sealing plug 1 rebounds) occurs.Wherein, taper
The bigger diameter end of block head 1 is detachably connected with the lower end of transmission rod 2, after death, is bored in order in conical sealing plug 1 and stolen eyelet welding
Shape block head 1 is separated with transmission rod 2.Preferably, external screw thread is provided with the outer wall of the lower end of transmission rod 2, taper closure
Blind hole is provided with the middle part of first 1 bigger diameter end, internal thread is provided with the inwall of blind hole, transmission rod 2 connects with the screw thread of conical sealing plug 1
Connect.The mode of threaded connection is easily set, and is easy to the dismounting of transmission rod 2 and conical sealing plug 1.
Specifically, the plugging device in the stolen hole that the utility model embodiment is provided also includes being connected with the upper end of transmission rod 2
Power transmission pole cap 6, power transmission pole cap 6 be in hexagonal prism structure, be easy to the instruments such as spanner to clamp power transmission pole cap 6 securely, to give
Give the twisting force of transmission rod 2.Wherein, power transmission pole cap 6 is detachably connected with the upper end of transmission rod 2, is easy to both dismounting.
Used as a kind of implementation method, as shown in Figure 1, the plugging device in the stolen hole that the utility model embodiment is provided is also
Including two handlebars 7, and two side walls relative with transmission rod 2 respectively of handlebar 7 are vertical connects, and are easy to operating personnel's control
Two handlebars 7 enable the conical sealing plug 1 being connected with the lower end of transmission rod 2 to block stolen exactly with righting transmission rod 2
Hole.Wherein, handlebar 7 is in and is provided with to be coincide with the palmistry of operating personnel in rod-like structure, and the handlebar 7 of rod-like structure
Curved indentations, to improve the comfort level for using.
Used as another way of example, as shown in Figure 2, the device that the utility model embodiment is provided also includes hydraulic control
Force application apparatus 8, hydraulic control force application apparatus 8 include hydraulic jack 801, by upper level board 802, lower horizontal board 803, left vertical support
804th, the square set of the composition of right vertical support 805, and between left vertical support 804 and right vertical support 805 and can
The by-level plate 806 for sliding up and down；The middle part of lower horizontal board 803 is provided with circular hole, and lower horizontal board 803 is set with simultaneously by circular hole
It is fixed on the top of the outer wall of seal pipe 3；By-level plate 806 is located at the upper end of power transmission pole cap 6；Hydraulic jack 801 is placed on
On by-level plate 806.Hydraulic control force application apparatus 8 are set, hydraulic jack 801 is only controlled, transmission rod 2 just can be given downward
Active force, it is time saving and energy saving, it is easy to promote.Left vertical support 804 and right vertical support 805 are vertically fixed on level board 802
On the upper surface of lower surface and lower horizontal board 803, two through holes are relatively set with the plate face of by-level plate 806, it is left vertical
Pillar 804 and right vertical support 805 are each passed through two through holes, so that by-level plate 806 can be along the He of left vertical support 804
Right vertical support 805 is slided up and down.Wherein, hydraulic jack 801 is placed on by-level plate 806, and with power transmission pole cap 6 and
The axis of transmission rod 2 overlaps, and the upper surface of by-level plate 806 is provided with a circle groove, with the base with hydraulic jack 801
Lower end is engaged, it is to avoid hydraulic jack 801 is moved on by-level plate 806.
When hydraulic jack 801 is started, its base extruding by-level plate 806, the upper level board 802 of movable end extruding,
Because the position of upper level board 802 is fixed, so its base is pressed down against by-level plate 806 so that by-level plate 806 with
The power transmission pole cap 6 of the upper end of transmission rod 2 offsets, to give transmission rod 2 downward active force.Hydraulic jack 801 is this area institute
Common, such as hydraulic jack 801 is the model RSM ultrathin types for being produced and being sold by Taizhou jacking machine tool Co., Ltd
Hydraulic jack.
Specifically, in the utility model embodiment, blow-down pipe 4 is arranged on the bottom of seal pipe 3, and blow-down pipe 4
Oil-out is set vertically downward, so that the crude oil from the outflow of blow-down pipe 4 is discharged downwards, is easy to operating personnel to block stolen hole.
Specifically, in the utility model embodiment, seal 5 is fixed in the upper lumen of seal pipe 3, is passed for sealing
Annular space between power bar 2 and seal pipe 3, to prevent crude oil from being sprayed by the upper end of seal pipe 3.Wherein, seal 5 has various
Structure, such as circular sealing-plug, taper platform construction seals, hollow cylindrical structure seal etc..Preferably, seal
5 is circular sealing-plug, and now the inwall on the top of seal pipe 3 is provided with annular groove, and the big footpath outer rim of circular sealing-plug is consolidated
It is scheduled in annular groove, during so that transmission rod 2 being slided up and down, the position of circular sealing-plug keeps constant, and then seals power transmission
Annular space between bar 2 and seal pipe 3, the concrete structure of circular sealing-plug is referring to accompanying drawing 3.
Seal 5 is prepared by the raw material components using following mass percent：19%-23% plasticity butylbenzene rubbers
Glue, 5%-9% ternary ethylbenzene rubber, 56%-62% ethylene-vinyl acetate copolymers, balance of silicon carbide micro-powder and zirconium carbide
The mixture of micro mist.Such as mass percent of plasticity butadiene-styrene rubber is 19%, 20%, 21%, 22%, 23% etc., ternary
The mass percent of ethylbenzene rubber can be 5%, 6%, 7%, 8%, 9% etc., the quality percentage of ethylene-vinyl acetate copolymer
Than being 56%, 57%, 58%, 59%, 60%, 61%, 62% etc., the mixing of balance of silicon carbide micro-powder and zirconium carbide micropowder
Thing.Prepared by above-mentioned each raw material components and can obtain light weight, with impact resistance and anti-wear circular sealing-plug,
The use requirement of the seal 5 in the plugging device in the stolen hole that the offer of the utility model embodiment can be provided.
Further, as shown in Figure 4, the utility model embodiment provide stolen hole plugging device also include with it is close
The seal pipe gland 9 that the upper end of tube sealing 3 is detachably connected, the dynamic sealing of transmission rod 2 ground passes through seal pipe gland 9.Seal pipe gland 9 with
Basic gap between transmission rod 2, is easy to transmission rod 2 to may pass through seal pipe gland 9 and slide up and down, and sets seal pipe gland 9
Further avoid after seal 5 (such as annular seal plug) abrasion, crude oil sprays from the upper end of seal pipe 3.Wherein, it is close
Tube sealing gland 9 is sleeved on the upper end of seal pipe 3 threadably, and the mode of threaded connection is easily set, and is easy to seal pipe
The dismounting of gland 9 and seal pipe 3.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit protection domain of the present utility model,
It is all it is of the present utility model spirit and principle within, any modification, equivalent substitution and improvements made etc. should be included in this reality
Within new protection domain.
Claims (9)
1. a kind of plugging device in stolen hole, the plugging device includes conical sealing plug (1), the conical sealing plug (1)
Two ends are respectively bigger diameter end and miner diameter end；
Transmission rod (2), lower end is connected with the bigger diameter end of the conical sealing plug (1)；
Characterized in that, the plugging device also includes seal pipe (3), gap is sleeved on the transmission rod (2), the sealing
The internal thread being threadedly coupled with the valve (11) on petroleum pipeline (10), the transmission rod are provided with the lower end inner wall for managing (3)
(2) can be moved up and down in the seal pipe (3), the conical sealing plug (1) is inserted on the petroleum pipeline (10)
In stolen hole；
Blow-down pipe (4), is arranged on the bottom of the seal pipe (3), and with the inner space of the seal pipe (3)；
Seal (5), is fixed in the seal pipe (3) upper lumen, for sealing the transmission rod (2) and the seal pipe
(3) annular space between.
2. plugging device according to claim 1, it is characterised in that along week on the outer surface of the conical sealing plug (1)
It is raised to multi-ring annular is provided with.
3. plugging device according to claim 1, it is characterised in that the bigger diameter end of the conical sealing plug (1) with
The lower end of the transmission rod (2) is detachably connected.
4. plugging device according to claim 1, it is characterised in that described device also include with the transmission rod (2)
The power transmission pole cap (6) of connection is held, the power transmission pole cap (6) is in hexagonal prism structure.
5. plugging device according to claim 4, it is characterised in that described device also includes two handlebars (7), two
The handlebar (7) side wall relative with the transmission rod (2) respectively is vertical to be connected.
6. plugging device according to claim 4, it is characterised in that described device also includes hydraulic control force application apparatus (8), institute
Stating hydraulic control force application apparatus (8) includes hydraulic jack (801), by upper level board (802), lower horizontal board (803), left vertical support
(804), the square set of right vertical support (805) composition, and positioned at the left vertical support (804) and the right branch vertically
Between post (805) and the by-level plate (806) that can slide up and down；
Circular hole is provided with the middle part of the lower horizontal board (803), the lower horizontal board (803) is set with and is fixed by the circular hole
On the top of the seal pipe (3) outer wall；
The by-level plate (806) is positioned at the upper end of the power transmission pole cap (6)；
The base of the hydraulic jack (801) is placed on the by-level plate (806).
7. plugging device according to claim 1, it is characterised in that the seal (5) is circular sealing-plug；
The inwall on seal pipe (3) top is provided with annular groove, and the big footpath outer rim of the circular sealing-plug is fixed on institute
State in annular groove.
8. plugging device according to claim 7, it is characterised in that the plugging device also includes and the seal pipe
(3) the seal pipe gland (9) that upper end is detachably connected, transmission rod (2) the dynamic sealing ground passes through the seal pipe gland (9).
9. plugging device according to claim 8, it is characterised in that side of the seal pipe gland (9) to be threadedly coupled
Formula is sleeved on the seal pipe (3) upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621301647.9U CN206309322U (en) | 2016-11-30 | 2016-11-30 | A kind of plugging device in stolen hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621301647.9U CN206309322U (en) | 2016-11-30 | 2016-11-30 | A kind of plugging device in stolen hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206309322U true CN206309322U (en) | 2017-07-07 |
Family
ID=59249427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621301647.9U Active CN206309322U (en) | 2016-11-30 | 2016-11-30 | A kind of plugging device in stolen hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206309322U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131526A (en) * | 2016-11-30 | 2018-06-08 | 中国石油天然气股份有限公司 | A kind of plugging device and method for blocking in stolen hole |
-
2016
- 2016-11-30 CN CN201621301647.9U patent/CN206309322U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131526A (en) * | 2016-11-30 | 2018-06-08 | 中国石油天然气股份有限公司 | A kind of plugging device and method for blocking in stolen hole |
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